import type { CncDialect, CncEvent, CncParseOptions } from "./index";

export type WasmSimulator = {
  parse(program: string, dialect?: CncDialect, options?: CncParseOptions): CncEvent[];
  parseFile(path: string, dialect?: CncDialect, options?: CncParseOptions): Promise<CncEvent[]>;
  parseWithParameterFile(
    program: string,
    parameterPath: string,
    dialect?: CncDialect,
    options?: CncParseOptions,
  ): Promise<CncEvent[]>;
  parseFileWithParameterFile(
    path: string,
    parameterPath: string,
    dialect?: CncDialect,
    options?: CncParseOptions,
  ): Promise<CncEvent[]>;
  dispose(): void;
  fs: {
    opfs: WasmOpfsWorkspace | null;
    module: unknown;
  };
};

export type WasmOpfsWorkspace = {
  mountPoint: string;
  workspacePath: string;
  resolvePath(path: string): string;
  readFile(path: string): Promise<Uint8Array>;
  readDirectory(path: string): Promise<string[]>;
  persistFile(path: string): Promise<Uint8Array>;
  persistDirectory(path: string): Promise<string[]>;
  writeFile(path: string, data: Uint8Array | string): Promise<void>;
  copyFile(fromPath: string, toPath: string): Promise<Uint8Array>;
  moveFile(fromPath: string, toPath: string): Promise<void>;
  exists(path: string): Promise<boolean>;
  stat(path: string): Promise<WasmOpfsEntryStat>;
  loadParameterFile(path: string): Promise<Uint8Array | null>;
  persistParameterFile(path: string): Promise<Uint8Array>;
  removeFile(path: string): Promise<void>;
  removeDirectory(path: string): Promise<void>;
  clear(): Promise<void>;
};

export type WasmOpfsEntryStat =
  | {
      kind: "file";
      size: number;
    }
  | {
      kind: "directory";
      size: null;
    };

export type WasmModuleOptions = {
  locateFile?: (file: string) => string;
  print?: (text: string) => void;
  printErr?: (text: string) => void;
  opfs?: false | {
    required?: boolean;
    mountPoint?: string;
    workspacePath?: string;
  };
};

export function createWasmSimulator(moduleOptions?: WasmModuleOptions): Promise<WasmSimulator>;